Parametrisering av förskämningsmodeller

Dynahmat is a project within which mathematical models are used to predict the spoilage
time, assuming current environmental temperatures which are measured by sensors, for a
number of different food products. In this thesis, these models are parameterized with the
aim of finding a common form which can be used for the instansiation of new spoilage
models. The method applied in this thesis is a combination of design science and a new
method with the intention of combining software development with mathematical modelling.
The common model form is produced by individually studying and parameterizing
every spoilage model. Each parameterized model is then compared to the other models,
and modified in such a way that a common expression is found. Using the final common
model, a proof of concept for an administrative tool is developed. This tool allows the
user to create new spoilage models, simply by defining an expression for the mathematical
parameters available in the application. As result, a proposal for a common model form
for predicting the spoilage time for the food products relevant in this thesis is presented,
in conjunction with a prototype for the administrative tool based on this model form. The
solution’s method of calculating spoilage times is validated by comparing results with that
of the previously existing system. The resulting proposed solution solves a lot of the problems
in the previous, hard-coded implementation, and calculates spoilage times with an
average error deviation of under 1 %.